Westmount AQI Trends
Westmount AQI was measured across 2024-2025, with a trend delta of n/a AQI points. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Quebec, Canada.
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Average EPA AQI
34
Rank 55 of 158 cities by average AQI
PM2.5
6.9
ug/m3 annualized city average
Seasonality
July
Cleanest: November
Health indicator
0.3
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Westmount
36
43
31
23
34
42
45
40
32
24
19
34
What this trends page measures
Compare yearly air-quality direction, best years, worst years, and trend deltas.
For Westmount, the current global analytics build covers 367 daily rows from 2024-01-01 to 2025-01-01. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.